Howdy.
The board I am porting to uses Samsung's K9F1G08U0M NAND--which it appears is a "Big Block NAND" chip and non-standard. I've tried doing some general fiddling with the macros in the NAND, Flash, and JFFS2 segments of the code--which has gotten NAND and the generic Flash commands working, but the JFFS2 code seems to have problems. I researched this a bit, and it seems that Samsung has their own solution, RFS, which they say should used with NAND chips with page sizes more than 512 bytes (ours is 2048.) We are currently contacting the board manufacturer to see about receiving the RFS code for U-Boot and Linux, but if it ends up that we cannot receive this code, then I would like to ask if anyone knows whether the current U-Boot JFFS2 code should be able to work with big block NAND (and I just need to fiddle with it more), or if I will need to essentially create my own JFFS2 handler? I don't currently have an adequate understanding of JFFS2 or flash memory to determine what possible issues there are between different chip formats.
Thank you, Chris Williams